Thread-unwinder for sewing-machines



(No Model.)

M. V. PALMER.

THREAD UNWINDBR FOR SEWING MACHINES. No. 446,465.

atented Feb. 1'7, 1891.

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MARO VIRGIIJ PALMER, OF IVIILIMANTIC, ASSIGNOR TO TIIE YILIJIMANTICLINEN COMPANY, OF HARTFORD, CONNECTICUT.

THREADUNWINDER FOR SEWINGDVICHINES.

SPECIFICATION forming part of Letters Patent No. 446,465, dated February1'7, i891. Application filed February 23, 1888. Serial No. 264,951. (Nomodel.)

To a/ZZ whom 2725 may concern.-

Be it known that I, Mano VIRGIL PALMER, of Willimantic, in the county oflViudhain and State of Connecticut, have invented certain new and usefulImprovements in Unfwinders for Thread and the Like, of which thefollowing is a full, clear, and exact description, whereby any oneskilled in the art can make and use the same.

My invention relates to the class of devices adapted to be used inunwinding from a cone, spool, or bobbin the thread that has been woundthereon, my improved unwinder being especially adapted for use inunwinding thread as it is used in sewing or in the manufacture ofknitted or woven fabrics.

The object of my invention is to provide a device that will secure amore uniform tension on the thread or yarn as it is unwound, and willalso tend to preventI its breaking in the unwinding.

T0 this end my invention consists in the combination of the severalparts making up the device as a whole, as more particularly hereinafterdescribed, and pointed lout in the claims.

Referring to the drawings, Figure 1 is a view in central verticallongitudinal section of a standard fitted with my improved un- Winder.Fig. 2 is a detail perspective view illustrating'the operation of theunwinder.

In the use of thread or yarn for sewing or for making various fabricsthe mass of thread, whether in a cone or on a spool or bobbin, issupported in a position from which it can be conveniently unwound, thethread being led through a suitable guide. Unless something in thenature ot' what I term an un- Winder7 is used the thread is liable tocatch under the edge of the spool or mass and cause an uneven andvarying tension and often breaking the thread. This difficulty is cxperienced with softdinished thread and is increased with hard-iinished,as the latter is apt to throw off in coils that drop to the base of thespool or mass.

In the accompanying drawings, the letter a denotes a mass of threadwound into a form that is called a cone on a tapered hollow bobbin I),that is usually made of paper or 5o strawboard. Such a cone is placed onthe post c, that rises from a base or support d, that is of anyconvenient shape and material. The stem e of the unwinder e is insertedin the hollow c of the post c, and from it the arms e2 branch outwardand then downward to the annular base eg of the unwinder, that occupiesin its normal state a position in a plane a lit-tie below the bottom ofthe mass of the cone or spool. This unwinder is sup- 6o ported on thepost by means that leave it free to rotate as well as to rise and fallunder the pull of the thread a', that in the proper position forutilizing the unwinder passes down and under the annular base of theunwinder, and then upward and through the guide f, that is usually fixeddirectly over the end of the post by means ot' a standard f.

By the use of my improved unwinder the 7o breaking of thread or yarn isprevented and a greater uniformity of tension on the thread gained.

As shown in the drawings, the unwinder is made of wire in the form of aframe-work, with acentral stein and three spreading arms that supportthe annular base 5 but I do not limit myself to the precise constructionor material so long as the device consists of the central stem supportedon the standard with 8o the pendent ring hung near the plane of the baseof the mass of thread.

I claim as my invention-` l. In combination with the post c, fixed on abase or support and having a central open- 8 5 ing for the reception ofthe unwinderstem, the unwinder c, having a stem e projecting downwardfrom the crosswise arms on the upper part of the unwinder, and also anannular base es, located near the bottom of the 9o post and below thenormal position of the under part of a mass of thread when the latter issupported on the post, all substantially as described.

2. In combination with the central post c, rising from a base d, athread-guide f, supported above the upper end of the base, the centralopening in the base to receive the stom of the un\vnder,tl1e unwindor e,llavof tho bottom of the mass of thread supng a pivotal stom e', armse2, that branch ported on the post, all substantially as dofrom thecentral stem and turn downward scribed.

at the sides and connected with an annnlal` MAR() VIRGIL PALMER. base e,the said unwinder being loosely sup- Witnesses:

ported n the hole in the post, and the annu- GEORGE \V. MELONY,

lar base of the nnwinder lying nearthe level E. S. BOSS.

